Identification_Information: Citation: Citation_Information: Originator: Szumigala, D.J. Originator: Newberry, R.J. Originator: Werdon, M.B. Originator: Athey, J.E. Originator: Stevens, D.S.P. Originator: Flynn, R.L. Originator: Clautice, K.H. Originator: Craw, P.A. Publication_Date: 2002 Title: Geologic map of the Eagle A-1 Quadrangle, Fortymile mining district Geospatial_Data_Presentation_Form: map, vector digital data Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2002-1A Other_Citation_Details: 1 sheet, scale 1:63,360, 6 disks Online_Linkage: http://dx.doi.org/10.14509/2863 Description: Abstract: This geologic map was produced by merging a bedrock geologic map and a surficial geologic map of the Eagle A-1 Quadrangle. Surficial geologic units were determined by a combination of air photo interpretation and site-specific field investigations. Bedrock geologic units were determined by using a combination of airborne magnetic and electromagnetic surveys, several months of fieldwork, geochemical data, and laboratory investigations. These maps are the result of new field investigations by DGGS in 1999 and 2001. Purpose: The resulting map and data are intended to provide a geologic map and a geologic interpretation of the Fortymile mining district at 1:63,360 scale. Previously published geologic maps at a 1:63,360 scale of this area have been reconnaissance-level maps or only covered portions of the quadrangle. Mapping at 1:63,360 scale or greater detail is needed to identify critical geologic features that may relate to more regional structures or geologic units. These detailed observations are also critical to test or use in tectonic models. This map also provides a geologic base in which to interpret geochemical results from the concurrent DGGS rock sampling program. Supplemental_Information: The layers listed below are present as ArcGIS shape files. Attribute information for the following layers (entities) is included in this metadata file under the "Entity_and_Attribute_Information" section. Each layer is listed and described in detail under its own heading starting "Entity_Type_Label." Basic unit information is also included in the unit code set file "PIR2002-1_codeset.pdf." Layers include: >eaga1ages_2 age date locations >eaga1bedcont2 bedrock unit contact boundaries >eaga1compdike dike strike orientations >eaga1compfld2 axial traces >eaga1compflt2 fault traces >eaga1compgeo3 uncoded contacts surrounding the surficial and bedrock units >eaga1compshr uncoded contacts surrounding the exposed sheared bedrock units >eaga1dikes dike composition and location >eaga1faultsym fault orientation >eaga1foldsym fold orientation >eaga1indmin kyanite, staurolite, and tourmaline localities identified by thin section petrography >eaga1pingo pingo locations >eaga1srfcont contacts surrounding the surficial units >eaga1str foliation and bedding structural information Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1999 Ending_Date: 2002 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -141.504512 East_Bounding_Coordinate: -141.000000 North_Bounding_Coordinate: 64.250853 South_Bounding_Coordinate: 63.999139 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: Alluvial Deposits Theme_Keyword: Colluvial Deposits Theme_Keyword: Geology Theme_Keyword: Glacial Deposits Theme_Keyword: Igneous Rocks Theme_Keyword: Man-Made Deposits Theme_Keyword: Metamorphic Rocks Theme_Keyword: Mining Theme_Keyword: STATEMAP Project Theme_Keyword: Unconsolidated Deposits Place: Place_Keyword_Thesaurus: none Place_Keyword: Alaska, State of Place_Keyword: Eagle Quadrangle Place_Keyword: Fortymile Mining District Place_Keyword: Fortymile River Place_Keyword: Jack Wade Junction Place_Keyword: Steele Creek Dome Place_Keyword: Taylor Highway Place_Keyword: Top of the World Highway Stratum: Stratum_Keyword_Thesaurus: none Stratum_Keyword: Fortymile River Assemblage Stratum_Keyword: Nasina Series Stratum_Keyword: Seventymile Terrane Temporal: Temporal_Keyword_Thesaurus: none Temporal_Keyword: Cenozoic Temporal_Keyword: Cretaceous Temporal_Keyword: Devonian Temporal_Keyword: Holocene Temporal_Keyword: Jurassic Temporal_Keyword: Mesozoic Temporal_Keyword: Mississippian Temporal_Keyword: Paleozoic Temporal_Keyword: Pennsylvanian Temporal_Keyword: Permian Temporal_Keyword: Pleistocene Temporal_Keyword: Precambrian Temporal_Keyword: Quaternary Temporal_Keyword: Tertiary Temporal_Keyword: Triassic Access_Constraints: This report, map, and dataset are available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. (See contact information below) Use_Constraints: Any hardcopies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, they are obligated to describe the types of modifications the user has made. User specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Contact_Position: GIS Data Manager/Cartographer Contact_Address: Address_Type: mailing and physical address Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: (907) 451-5029 Contact_Voice_Telephone: (907) 451-5020 Contact_Facsimile_Telephone: (907) 451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Contact_Instructions: You may view our web site at http://www.dggs.alaska.gov for the latest information on available data. Please e-mail your questions and data requests when possible since our web site and e-mail address will remain current even if our phone number and mailing address change. Data_Set_Credit: The geologic work was funded by the Alaska State Legislature through a Capital Improvement Project (Alaska Airborne Geophysical/Geological Mineral Inventory Program) and the general fund and through the U.S. Geological Survey STATEMAP program under U.S. Department of the Interior, U.S. Geological Survey, National Cooperative Geologic Mapping Program assistance award 01HQAG0054. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government. DGGS student interns and volunteers providing field assistance include Bryan A. Finseth (1999), Mark Mccrary (1999), J.C.Grady (2000), W.C. Munley (2000), and M.R. Johnson (2001). Milton A. Wiltse provided technical review of the maps. Jessica Mayer provided assistance with surficial geologic studies. Native_Data_Set_Environment: Microsoft Windows XP SP2, ArcGIS 9.+, and any text editor. Cross_Reference: Citation_Information: Originator: Szumigala, D.J. Originator: Newberry, R.J. Originator: Werdon, M.B. Originator: Athey, J.E. Originator: Flynn, R.L. Originator: Clautice, K.H. Publication_Date: 2002 Title: Bedrock geologic map of the Eagle A-1 Quadrangle, Fortymile mining district Geospatial_Data_Presentation_Form: map, vector digital data Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2002-1B Publication_Information: Publication_Place: Fairbanks, AK Publisher: Division of Geological & Geophysical Surveys Other_Citation_Details: 1 sheet, 1:63,360 scale Online_Linkage: http://dx.doi.org/10.14509/2864 Cross_Reference: Citation_Information: Originator: Werdon, M.B. Originator: Newberry, R.J. Originator: Szumigala, D.J. Originator: Pinney, D.S. Publication_Date: 2001 Title: Geologic map of the Eagle A-2 Quadrangle, Fortymile mining district, Alaska Geospatial_Data_Presentation_Form: map, vector digital data Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2001-3A Publication_Information: Publication_Place: Fairbanks, AK, USA Publisher: Division of Geological & Geophysical Surveys Other_Citation_Details: 1 sheet, scale 1:63,360 Online_Linkage: http://dx.doi.org/10.14509/2669 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Geologic location data were downloaded from Garmin 12XL GPS units into an Access database. Selected sample numbers and locations were queried from the database and brought into a Microsoft Excel 2000 spreadsheet. Spatial reference files were created in MapInfo Professional 6.5 and translated into Arc/Info point coverage format. Data for bedrock-geologic arc and polygon coverages were 'on screen' digitized from a scanned mylar geologic compilation. Bedrock-geologic information was compiled on stable mylar with abundant control points at 1:50,000 scale and registered in MapInfo Professional 6.5, then reduced to a layer onto a 1:63,360-scale USGS topographic base. The surficial-geologic information was transferred from acetate air-photo overlays to a paper 1:63,360-scale USGS topographic base using a zoom transfer scope. The surficial-geologic information was then digitized into Arc/Info GIS (ArcEdit module) using a large-format digitizing table with RMS registration errors constrained to be no larger than 0.003 inches (input coverage units) for each digitizing session. Geologic data included in the compilation are the field maps and notes from this project as well as data from other sources as noted in the "Sources Cited" section. Logical_Consistency_Report: Polygon topology present and clean on appropriate data. Other data are line, point, or annotation data and do not require topologic relationships. Completeness_Report: This dataset includes geospatial information about geologic units, age and field sample locations, structural features, structural measurements, pingo, and dike locations. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Location data were downloaded from Garmin 12XL GPS units into an Access database. Sample numbers and locations with selected data were queried from the database or brought into an Excel spreadsheet and then spatially analyzed in MapInfo Professional 6.5. The lists of samples were visually checked against the lists of analyzed samples returned from the laboratories. It was verified that all the samples plotted on the maps are included in the various tables and spreadsheets. Quantitative_Horizontal_Positional_Accuracy_Assessment: Horizontal_Positional_Accuracy_Value: 10 Horizontal_Positional_Accuracy_Explanation: A value of estimated position error in meters was calculated by the Garmin 12XL units and recorded for each sample location. Estimated position error calculated by the Garmin 12XL units was not better than 3 meters and averaged approximately 6 meters. The GPS system suffers from calculation and geometric error. This error results from items such as error in satellite positions, mathematical error introduced by the formulas used by the GPS unit for calculating position, and errors caused by narrow satellite alignments. Estimated position error is a value determined by the GPS manufacturer for the calculation and geometric error as a whole. 'Selective availability', a deliberate degradation of GPS data managed by the U.S. government, was not operating after May 1, 2000, when the majority of samples were collected. 'Selective availability' induces an additional error of approximately 100 meters to a GPS location. Surficial-geologic map data have a horizontal positional accuracy dependent on: (1) the 1:50,000-scale (nominal) aerial photographs on which it is based, with an estimated potential error due to a pen line width of approximately 0.001 being equivalent to approximately 1.5 meters on the ground; (2) the accuracy of the human zoom transfer scope operator in tracing the linework from acetate overlays to topographic base maps, with an estimated error due to a pen line width of approximately 0.001 being equivalent to approximately 1.5 meters on the ground; (3) the accuracy of the zoom transfer process itself, error magnitude highly variable and unknown but potentially large; (4) the digitizing RMS error of 0.003 inches (input coverage units), which equates to approximately 5 meters on the ground for a 1:63,360-scale map; and (5) the accuracy of the human operator digitizing the geologic linework from the topographic base maps, with an estimated error due to a pen line width of approximately 0.001 being equivalent to approximately 1.5 meters on the ground. Total potential horizontal error for surficial-geologic map features is therefore estimated to be approximately 10 meters. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Foster, H.L. Publication_Date: 1969 Title: Reconnaissance geology of the Eagle A-1 and A-2 quadrangles, Alaska Geospatial_Data_Presentation_Form: map, document Series_Information: Series_Name: U.S. Geological Survey Bulletin Issue_Identification: B 1271-G Publication_Information: Publication_Place: Washington D.C., USA Publisher: United States Government Printing Office Other_Citation_Details: p. G1-G30, 1 sheet, scale 1:63,360 Online_Linkage: http://www.dggs.alaska.gov/pubs/id/3658 Source_Scale_Denominator: 63360 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1969 Source_Currentness_Reference: Published in 1969 based on a compilation of work done in the area from a period of 1960 to 1969 Source_Citation_Abbreviation: Foster, 1969 Source_Contribution: These data were used to further define the geologic units in the Eagle A-1 Quadrangle. See this publication cited in the Process Step section below. Source_Information: Source_Citation: Citation_Information: Originator: Flynn, R.L. Originator: Newberry, R.J. Publication_Date: 2001 Title: Geology of the Boundary area, Eagle A-1 Quadrangle, east-central Alaska Geospatial_Data_Presentation_Form: tabular digital data, vector digital data, map Series_Information: Series_Name: U.S. Geological Survey EDMAP program Issue_Identification: U.S. Geological Survey EDMAP program, under assistance Award No. 00HQAG0061 Publication_Information: Publication_Place: Fairbanks, AK, USA Publisher: Flynn, R.L. Other_Citation_Details: 1 sheet, 1:25,000 scale. Part of Geology M.S. thesis work at University of Alaska, Fairbanks. Source_Scale_Denominator: 25000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2000 Ending_Date: 2001 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Flynn and Newberry, 2001 Source_Contribution: These data were used to further define the geologic units in the Eagle A-1 Quadrangle and contribute to the general geologic understanding of the area. See this publication cited in the Process Step section below. Source_Information: Source_Citation: Citation_Information: Originator: Day, W.C. Originator: Aleinikoff, J.N. Originator: Gamble, B.M. Publication_Date: 2002 Title: Geochemistry and age constraints on metamorphism and deformation of the Fortymile River area, eastern Yukon-Tanana Upland, Alaska Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: U.S. Geological Survey Professional Paper Issue_Identification: P 1662 Publication_Information: Publication_Place: Washington D.C., USA Publisher: U.S. Geological Survey Other_Citation_Details: p. 4-18 Online_Linkage: http://www.dggs.alaska.gov/pubs/id/4050 Larger_Work_Citation: Citation_Information: Originator: Wilson, F.H. (ed.) Originator: Galloway, J. (ed.) Publication_Date: Unknown Title: Studies by the U.S. Geological Survey in Alaska, 2000 Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: U.S. Geological Survey Professional Paper Issue_Identification: P 1662 Publication_Information: Publication_Place: Washington D.C., USA Publisher: U.S. Geological Survey Other_Citation_Details: 149 pp. Online_Linkage: http://www.dggs.alaska.gov/pubs/id/4050 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2002 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Day and others, 2002 Source_Contribution: These data were used to further define the geologic units in the Eagle A-1 Quadrangle and contribute to the general geologic understanding of the area. See this publication cited in the Process Step section below. Source_Information: Source_Citation: Citation_Information: Originator: Burns, L.E. Originator: Dighem Originator: Stevens Exploration Management Corp. Publication_Date: 1999 Title: CD-ROM containing profile and gridded data and section lines of 1998 geophysical survey data for part of the Fortymile mining district, Alaska, southern Eagle and northern Tanacross quadrangles Geospatial_Data_Presentation_Form: tabular digital data, raster digital data, vector digital data Series_Information: Series_Name: Public Data File Issue_Identification: PDF 99-9 Publication_Information: Publication_Place: Fairbanks, Alaska, USA Publisher: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Other_Citation_Details: 2 CD-ROMs Online_Linkage: http://dx.doi.org/10.14509/1886 Type_of_Source_Media: CD-ROM Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 199808 Ending_Date: 199902 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: DGGS PDF 1999-9 Source_Contribution: Geologic maps published by DGGS using data from this CD-ROM were referred to frequently during geologic mapping. A list of the geologic maps available is included in a cross-reference publication. See this publication cited in the Process Step section below. Source_Information: Source_Citation: Citation_Information: Originator: Yeend, W.E. Publication_Date: 1996 Title: Gold placers of the historical Fortymile River region, Alaska Geospatial_Data_Presentation_Form: map, document Series_Information: Series_Name: U.S. Geological Survey Bulletin Issue_Identification: B 2125 Publication_Information: Publication_Place: Washington D.C., USA Publisher: U.S. Geological Survey Other_Citation_Details: 75 pp., 1 sheet, scale 1:63,360 Online_Linkage: http://www.dggs.alaska.gov/pubs/id/3781 Source_Scale_Denominator: 63360 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1996 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Yeend, 1996 Source_Contribution: See this publication cited in the Process Step section below Source_Information: Source_Citation: Citation_Information: Originator: Werdon, M.B. Originator: Szumigala, D.J. Originator: Newberry, R.J. Originator: Grady, J.C. Originator: Munly, W.C. Publication_Date: 2000 Title: Major oxide, minor oxide, trace element, rare-earth element, and geochemical data from rocks collected in Eagle and Tanacross quadrangles, Alaska in 2000 Geospatial_Data_Presentation_Form: map, document Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2000-4 Publication_Information: Publication_Place: Fairbanks, AK Publisher: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Other_Citation_Details: 29 p., 3 sheets, scale 1:63,360 Online_Linkage: http://dx.doi.org/10.14509/2729 Source_Scale_Denominator: 63360 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2000 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Werdon and others, 2000 Source_Contribution: These data were used to further define the geologic units in the Eagle A-1 Quadrangle and contribute to the general geologic understanding of the area. See this publication cited in the Process Step section below. Source_Information: Source_Citation: Citation_Information: Originator: Szumigala, D.J. Originator: Newberry, R.J. Originator: Werdon, M.B. Originator: Finseth, B.A. Originator: Pinney, D.S. Originator: Flynn, R.L. Publication_Date: 2000 Title: Major oxide, minor oxide, trace element, and geochemical data from rocks collected in a portion of the Fortymile mining district, Alaska, 1999 Geospatial_Data_Presentation_Form: map, document Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2000-1 Publication_Information: Publication_Place: Fairbanks, AK Publisher: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Other_Citation_Details: 24 p., 2 sheets, scale 1:63,360 Online_Linkage: http://dx.doi.org/10.14509/2727 Source_Scale_Denominator: 63360 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2000 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Szumigala and others, 2000 Source_Contribution: These data were used to further define the geologic units in the Eagle A-1 Quadrangle and contribute to the general geologic understanding of the area. See this publication cited in the Process Step section below. Source_Information: Source_Citation: Citation_Information: Originator: Szumigala, D.J. Originator: Werdon, M.B. Originator: Newberry, R.J. Originator: Athey, J.E. Originator: Clautice, K.H. Originator: Flynn, R.L. Originator: Grady, J.C. Originator: Munly, W.C. Originator: Johnson, M.R. Publication_Date: 2002 Title: Major oxide, minor oxide, trace element, rare-earth element, trace geochemical, and coal quality data from rocks collected in Eagle and Tanacross quadrangles, Alaska in 1999, 2000, and 2001 Geospatial_Data_Presentation_Form: map, document Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2002-1 Publication_Information: Publication_Place: Fairbanks, AK Publisher: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Other_Citation_Details: 35 p., 1 sheet, scale 1:63,360 Online_Linkage: http://dx.doi.org/10.14509/2866 Source_Scale_Denominator: 63360 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2002 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Szumigala and others, 2002 Source_Contribution: These data were used to further define the geologic units in the Eagle A-1 Quadrangle and contribute to the general geologic understanding of the area. See this publication cited in the Process Step section below. Source_Information: Source_Citation: Citation_Information: Originator: Newberry, R.J. Originator: Layer, P.W. Originator: Solie, D.N. Originator: Burleigh, R.E. Publication_Date: 1998 Title: New 40Ar/39Ar dates for intrusions and mineral prospects in the eastern Yukon-Tanana Terrane, Alaska - regional patterns and significance Geospatial_Data_Presentation_Form: report Series_Information: Series_Name: U.S. Geological Survey Professional Paper Issue_Identification: P 1595 Publication_Information: Publication_Place: Washington D.C., USA Publisher: U.S. Geological Survey Other_Citation_Details: p. 131-159 Online_Linkage: http://www.dggs.alaska.gov/pubs/id/4120 Larger_Work_Citation: Citation_Information: Originator: Gray, J.E. (ed.) Originator: Riehle, J.R. (ed.) Publication_Date: 1998 Title: Geologic studies in Alaska by the USGS, 1996 Geospatial_Data_Presentation_Form: report Series_Information: Series_Name: U.S. Geological Survey Professional Paper Issue_Identification: P 1595 Publication_Information: Publication_Place: Washington D.C., USA Publisher: U.S. Geological Survey Other_Citation_Details: 200 p. Online_Linkage: http://www.dggs.alaska.gov/pubs/id/4025 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1998 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Newberry and others, 1998 Source_Contribution: These data were used to further define the geologic units in the Eagle A-1 Quadrangle and contribute to the general geologic understanding of the area. See this publication cited in the Process Step section below. Source_Information: Source_Citation: Citation_Information: Originator: USGS Publication_Date: 19970808 Title: Digital Raster Graphic (DRG), Eagle A-1 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: None Issue_Identification: None Publication_Information: Publication_Place: Reston, VA, USA Publisher: USGS Online_Linkage: http://agdc.usgs.gov/data/usgs/geodata/drg/temp/drglist_E.html Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 19970808 Source_Currentness_Reference: Ground Condition Source_Citation_Abbreviation: Digital Raster Graphic (DRG), Eagle A-1 Source_Contribution: This topography was used in the publication as a base for the sample location points. This topography appears as a transparent overlay on the printed geologic maps. Process_Step: Process_Description: Fieldwork - During the summers of 1999 through 2001 DGGS conducted a geologic field mapping project to provide geologic ground truth for airborne geophysical surveys flown in the Fortymile mining district in 1998. DGGS efforts are focused on determining and understanding the geologic framework of the Fortymile mining district, especially with respect to placer gold and lode mineral deposits. Fieldwork for bedrock investigations, including ridge traverses, roadcut investigations, and river exposures, was conducted for 374 person-days during the months of June through August in 1999 - 2001. Field notes and rock samples were collected at more than 3,880 stations throughout the quadrangle for bedrock investigations. Sixty person-days were spent on field investigations for the surficial geology. Bedrock mapping involved using Burns and others (1999) on a daily basis for checking geologic contacts and units. Bedrock mappers recorded observations on 1:50,000-scale topographic maps of the quadrangle. Stations were located using handheld GPS devices with location precision varying from ±3 to 15 meters. Field station notes and downloaded GPS location data were entered into a Microsoft Access 2000 database. Source_Used_Citation_Abbreviation: Burns and others, 1999 Source_Used_Citation_Abbreviation: Digital Raster Graphic (DRG), Eagle A-1 Process_Date: 2001 Process_Step: Process_Description: Fieldwork - Fieldwork for surficial investigations, including traverses, roadcut investigations, and river exposures, was conducted for 60 person-days during the months of June through August in 1999 - 2001. Field notes and sediment samples were collected throughout the quadrangle for surficial investigations. Surficial mapping involved using Yeend (1996) on a regular basis for checking placer geology and general units. Surficial mappers recorded observations on co-registered acetate overlays on 1:50,000-scale (nominal) color-infrared aerial photographs, and directly on 1:63,360-scale topographic base maps. Stations were located using air photos and handheld GPS devices with location precision varying from ±3 to 15 meters. Source_Used_Citation_Abbreviation: Yeend, 1996 Source_Used_Citation_Abbreviation: Digital Raster Graphic (DRG), Eagle A-1 Process_Date: 2001 Process_Step: Process_Description: Laboratory data compilation - Laboratory analyses were performed on rock samples collected during the fieldwork process step from July 1999 intermittently through April 2002. Published geochemical and age results are found in Newberry and others (1998), Szumigala and others (2000, 2002), Werdon and others (2000), Flynn and Newberry (2001), Layer and others (in prep.), and Day and others (in press). Unpublished laboratory results include petrographic work on thin sections and modal analysis of rock slabs stained for plagioclase and potassium feldspar. Results from major-oxide and trace-element geochemistry of igneous and metamorphic rocks were used to calculate CIPW Norms for use in classifying rocks according to established petrologic nomenclature. Thin section and some other analytical data were entered into Microsoft Access 2000 databases. Thin sections produced by this study are currently stored at the DGGS office in Fairbanks, Alaska. Rock samples, including geochemical sample pulps and rock hand samples from most field stations, are currently stored at the DGGS office in Fairbanks. Final storage for most rock samples generated by this study will be at the DGGS Geologic Materials Center (GMC) in Eagle River, Alaska. Source_Used_Citation_Abbreviation: Newberry and others, 1998 Source_Used_Citation_Abbreviation: Szumigala and others, 2000 Source_Used_Citation_Abbreviation: Szumigala and others, 2002 Source_Used_Citation_Abbreviation: Werdon and others, 2000 Source_Used_Citation_Abbreviation: Flynn and Newberry, 2001 Source_Used_Citation_Abbreviation: Day and others, in press Process_Date: 2002 Process_Step: Process_Description: Laboratory data compilation - Laboratory analyses were performed on radiocarbon samples and gold-bearing gravel samples from June 1999 intermittently through April 2002. Unanalyzed radiocarbon and tephra samples are currently stored at the DGGS office in Fairbanks. Final storage for most samples generated by this study will be at the DGGS Geologic Material Center (GMC) in Eagle River, Alaska. Process_Date: 2002 Process_Step: Process_Description: Geologic map compilation - The bedrock and surficial geologic maps were compiled using field notes from fieldwork process step (above), analytical results from laboratory data compilation process step (above), and all known geologic data from previous work in the quadrangle. The main sources of existing data include Foster (1969), Newberry and others (1988), Yeend (1996), Burns and others (1999), Szumigala and others (2000, 2002), Werdon and others (2000), Flynn and Newberry (2001), Layer and others (in prep.), and Day and others (in press). Bedrock data were compiled on multiple layers of stable mylar at 1:50,000 scale, with some information plotted at 1:25,000 scale for more detail and later transferred to 1:50,000-scale mylar layers. Data were queried from Microsoft Access 2000 databases and plotted on mylar at 1:50,000 scale to answer specific geologic questions. Relevant information from all mylar layers was compiled onto one stable mylar sheet with abundant control points. Surficial-geologic information was interpreted using 1:50,000-scale (nominal) air-photo stereopairs, and compiled onto acetate overlays. The overlay information was transferred to a paper 1:63,360-scale USGS topographic base using a zoom transfer scope. Source_Used_Citation_Abbreviation: Foster, 1969 Source_Used_Citation_Abbreviation: Newberry and others, 1988 Source_Used_Citation_Abbreviation: Yeend, 1996 Source_Used_Citation_Abbreviation: Burns and others, 1999 Source_Used_Citation_Abbreviation: Szumigala and others, 2000 Source_Used_Citation_Abbreviation: Szumigala and others, 2002 Source_Used_Citation_Abbreviation: Werdon and others, 2000 Source_Used_Citation_Abbreviation: Flynn and Newberry, 2001 Source_Used_Citation_Abbreviation: Layer and others, in prep. Source_Used_Citation_Abbreviation: Day and others, in press Source_Used_Citation_Abbreviation: Digital Raster Graphic (DRG), Eagle A-1 Process_Date: 2002 Process_Step: Process_Description: Digital cartography - The bedrock-geologic map compilation mylar (above) was scanned by a large-format scanner and saved as a TIFF image. The TIFF image was registered into MapInfo Professional 6.5 with multiple registration points, and a registration error of approximately 2.7 meters (RMS error) was obtained. Geologic contacts and unit polygons were 'on-screen' digitized as complete polygons in MapInfo Professional 6.5. The polygon coverage was translated into Arc/Info format. In Arc/Info 7.0.4, all bedrock unit contacts and polygon coverages were generated from the original file and visual properties were coded. Arc coverages such as fold axes and cross-section traces were also 'on-screen' digitized in MapInfo Professional and translated into Arc/Info file format for visual coding. Station-specific information such as structural measurements, indicator mineral locations, location of age samples, and location of dikes too small to be mappable at 1:63,360 scale were imported into MapInfo Professional 6.5 from a Microsoft Access 2000 database or Excel spreadsheet using GPS locations. MapInfo Professional point coverages were translated into Arc/Info file format and visual properties were coded. Surficial-geologic information was digitized from the paper USGS topographic base map (above) into Arc/Info 7.0.4 GIS (ArcEdit module) using a large-format digitizing table. Surficial-geologic polygons and lines were then edited and attributed using Arc, Info, and ArcEdit. Bedrock point data of locations of structural observations (strike, dip, cleavage, jointing, etc.) and "rubblecrop" were intersected with the surficial-geologic polygon coverage using the Arc command "intersect" in order to identify locations that were mapped as surficial materials based on aerial photography but were found to have small exposures that were desirable to be mapped as bedrock. These areas were then modified in the surficial-geologic coverages to be areas of bedrock exposure. Final bedrock and surficial geology polygon coverages were merged using the Arc command "union" to generate the polygon coverage used to make PIR 2002-1A, the comprehensive geologic map. Source_Used_Citation_Abbreviation: Digital Raster Graphic (DRG), Eagle A-1 Process_Date: 2002 Process_Step: Process_Description: Metadata creation - Metadata were collected by David Szumigala, Jennifer Athey, and De Anne Stevens to FGDC Standards using a text editor and ESRI ArcCatalog 8.1.0.642 Process_Date: 2002 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -141.000 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000032 Ordinate_Resolution: 0.000032 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: eaga1ages_2 Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -141.000 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000254 Ordinate_Resolution: 0.000254 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: eaga1bedcont2 Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -141.000 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000207 Ordinate_Resolution: 0.000207 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: eaga1compdike Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -141.000 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000251 Ordinate_Resolution: 0.000251 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: eaga1compfld2 Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -141.000 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000254 Ordinate_Resolution: 0.000254 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: eaga1compflt2 Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -141.000 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000254 Ordinate_Resolution: 0.000254 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: eaga1compgeo3 Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -141.000 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000005 Ordinate_Resolution: 0.000005 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: eaga1compshr Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -141.000 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000064 Ordinate_Resolution: 0.000064 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: eaga1dikes Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -141.000 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000032 Ordinate_Resolution: 0.000032 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: eaga1faultsym Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -141.000 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000064 Ordinate_Resolution: 0.000064 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: eaga1foldsym Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -141.000 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000064 Ordinate_Resolution: 0.000064 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: eaga1indmin Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -141.000 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000032 Ordinate_Resolution: 0.000032 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: eaga1pingo Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -141.000 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000254 Ordinate_Resolution: 0.000254 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: eaga1srfcont Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -141.000 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000064 Ordinate_Resolution: 0.000064 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: eaga1str Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 294.978698 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: eaga1ages_2.shp Entity_Type_Definition: Point attribute table of age date locations Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Entity_Attribute_Layer_Name: eaga1ages_2 Attribute: Attribute_Label: SAMPLE_NO Attribute_Definition: Unique sample identifier Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys and others (see Source information) Attribute_Domain_Values: Unrepresentable_Domain: Generic example of unique sample identifier: YYAAA999X: YY=last two digits of year, AAA=geologist's initials (one to three characters), 999=unique station number, X=null or unique alpha character designating a sample was taken at the field station Attribute: Attribute_Label: DATE Attribute_Definition: Date sample was collected in the field. Date is only known for samples collected by Alaska Division of Geological & Geophysical Surveys. Date is in MM/DD/YY format. Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys and others (see Source information) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 6/7/2000 Range_Domain_Maximum: 8/27/2000 Attribute_Units_of_Measure: MM/DD/YY date Attribute: Attribute_Label: EASTING Attribute_Definition: Easting Attribute_Definition_Source: UTM Zone 7, NAD 27 (see Spatial_Reference_Information) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 478000 Range_Domain_Maximum: 499904 Attribute_Units_of_Measure: meters Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy: 10 Attribute_Value_Accuracy_Explanation: Accuracy, in meters, based on Garmin 12XL (see Positional_Accuracy) Attribute: Attribute_Label: NORTHING Attribute_Definition: Northing Attribute_Definition_Source: UTM Zone 7, NAD 27 (see Spatial_Reference_Information) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7101973 Range_Domain_Maximum: 7120500 Attribute_Units_of_Measure: meters Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy: 10 Attribute_Value_Accuracy_Explanation: Accuracy, in meters, based on Garmin 12XL (see Positional_Accuracy) Attribute: Attribute_Label: Lithology Attribute_Definition: Brief description of samples Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys and others (see Source information) Attribute_Domain_Values: Unrepresentable_Domain: sample descriptions Attribute: Attribute_Label: SYMBOL Attribute_Definition: Symbol identifying age date location on maps PIR 2002-1A and PIR 2002-1B. Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys and others (see Source information) Attribute_Domain_Values: Unrepresentable_Domain: sample descriptions Detailed_Description: Entity_Type: Entity_Type_Label: eaga1bedcont2.shp Entity_Type_Definition: Attribute table of bedrock unit contacts. This attribute table is the final product of a merge between the bedrock geology and the surficial geology polygon coverages. This attribute table indicates whether a non-faulted bedrock contact will be visible or concealed underneath surficial deposits. Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Entity_Attribute_Layer_Name: eaga1bedcont2 Attribute: Attribute_Label: CODE Attribute_Definition: line style coding of bedrock contacts, contact concealed where underneath surficial cover Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0 Enumerated_Domain_Value_Definition: line not visible, faulted contact Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 4 Enumerated_Domain_Value_Definition: bounding box Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 7 Enumerated_Domain_Value_Definition: contact inferred Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 9 Enumerated_Domain_Value_Definition: contact concealed Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: SURFBED Attribute_Definition: Indicates whether a particular line segment is or is not covered by surficial deposits Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: S Enumerated_Domain_Value_Definition: surficial, bedrock contact is covered by surficial deposits Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: B Enumerated_Domain_Value_Definition: bedrock, bedrock contact is not covered by surficial deposits Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Detailed_Description: Entity_Type: Entity_Type_Label: eaga1compdike.shp Entity_Type_Definition: Attribute table of dike strike orientations. This attribute table is the final product of a merge between the bedrock dike strike orientations arc coverage and the surficial geology polygon coverage. This attribute table indicates whether a dike strike orientation arc segment would be visible or concealed underneath surficial deposits. Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Entity_Attribute_Layer_Name: eaga1compdike Attribute: Attribute_Label: CODE Attribute_Definition: line style coding of dike strike orientations Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 57 Enumerated_Domain_Value_Definition: Dikes Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: SURFBED Attribute_Definition: Indicates whether a particular line segment is or is not covered by surficial deposits Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: S Enumerated_Domain_Value_Definition: surficial, arc segment is covered by surficial deposits Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: B Enumerated_Domain_Value_Definition: bedrock, arc segment is not covered by surficial deposits Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Detailed_Description: Entity_Type: Entity_Type_Label: eaga1compfld2.shp Entity_Type_Definition: Attribute table of axial traces. This attribute table is the final product of a merge between the bedrock axial traces arc coverage and the surficial geology polygon coverage. This attribute table indicates whether an axial trace will be visible or concealed underneath surficial deposits. Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Entity_Attribute_Layer_Name: eaga1compfld2 Attribute: Attribute_Label: TYPE Attribute_Definition: general type of fold Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: anti Enumerated_Domain_Value_Definition: anticline Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: syn Enumerated_Domain_Value_Definition: syncline Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: overanti Enumerated_Domain_Value_Definition: overturned anticline Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: oversyn Enumerated_Domain_Value_Definition: overturned syncline Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: CODE Attribute_Definition: Line style coding of axial traces, trace concealed where underneath surficial cover Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 35 Enumerated_Domain_Value_Definition: anticline or syncline, approximately located Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 38 Enumerated_Domain_Value_Definition: anticline or syncline, concealed Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: SURFBED Attribute_Definition: Indicates whether a particular line segment is or is not covered by surficial deposits Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: S Enumerated_Domain_Value_Definition: surficial, segment of axial trace is covered by surficial deposits Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: B Enumerated_Domain_Value_Definition: bedrock, segment of axial trace is not covered by surficial deposits Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Detailed_Description: Entity_Type: Entity_Type_Label: eaga1compflt2.shp Entity_Type_Definition: Attribute table of fault traces. This attribute table is the final product of a merge between the bedrock fault traces arc coverage and the surficial geology polygon coverage. This attribute table indicates whether a fault trace will be visible or concealed underneath surficial deposits. Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Entity_Attribute_Layer_Name: eaga1compflt2 Attribute: Attribute_Label: CODE Attribute_Definition: Line style coding of fault traces, trace concealed where underneath surficial cover Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 12 Enumerated_Domain_Value_Definition: Fault, approximately located Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 15 Enumerated_Domain_Value_Definition: Fault, concealed Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 18 Enumerated_Domain_Value_Definition: Thrust fault, approximately located Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 22 Enumerated_Domain_Value_Definition: Thrust fault, concealed Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: SURFBED Attribute_Definition: Indicates whether a particular line segment is or is not covered by surficial deposits Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: S Enumerated_Domain_Value_Definition: surficial, segment of fault trace is covered by surficial deposits Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: B Enumerated_Domain_Value_Definition: bedrock, segment of fault trace is not covered by surficial deposits Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Detailed_Description: Entity_Type: Entity_Type_Label: eaga1compgeo3.shp Entity_Type_Definition: Attribute table of the surficial and bedrock units Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Entity_Attribute_Layer_Name: eaga1compgeo3 Attribute: Attribute_Label: UNIT Attribute_Definition: bedrock and surficial map unit labels Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Codeset_Domain: Codeset_Name: PIR2002-1_codeset.pdf Codeset_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: MAT Attribute_Definition: materials map unit labels Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Codeset_Domain: Codeset_Name: PIR2002-1_codeset.pdf Codeset_Source: Alaska Division of Geological & Geophysical Surveys Detailed_Description: Entity_Type: Entity_Type_Label: eaga1compshr.shp Entity_Type_Definition: Polygon attribute table of sheared bedrock units Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Entity_Attribute_Layer_Name: eaga1compshr Attribute: Attribute_Label: UNIT Attribute_Definition: bedrock unit designator Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys, PIR 2002-1a and PIR 2002-1b Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: shr_Ts Enumerated_Domain_Value_Definition: (sheared) SEDIMENTARY ROCKS (Tertiary) - Poorly- to well-indurated, nonmarine sedimentary rocks of Tertiary age, as established by pollen (Foster, 1976; Foster and Igarashi, 1990). Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: shr_pMsg Enumerated_Domain_Value_Definition: (sheared) SCHIST AND PARAGNEISS (Pre-Mississippian) Mixed unit characterized by abundant aluminous metasedimentary rocks. Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Detailed_Description: Entity_Type: Entity_Type_Label: eaga1dikes.pat Entity_Type_Definition: Point attribute table of dike composition and location Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Entity_Attribute_Layer_Name: eaga1dikes Attribute: Attribute_Label: STATION Attribute_Definition: Unique sample identifier Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys and others (see Source information) Attribute_Domain_Values: Unrepresentable_Domain: Generic example of unique sample identifier: YY(YY)AAA999X: YY=last two digits of year or complete 4 digit year, AAA=geologist’s initials (one to three characters), 999=unique station number, X=null or unique alpha character designating a sample was taken at the field station Attribute: Attribute_Label: TYPE Attribute_Definition: A number designating the composition of a dike Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1 Enumerated_Domain_Value_Definition: Diabase, equivalent to eTd (Tertiary) Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys and bedsurf_units.doc Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 6 Enumerated_Domain_Value_Definition: Aplitic to pegmatitic; interpreted to be the latest phase of Jurassic, equivalent to Jga intrusions (Jurassic) Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys and bedsurf_units.doc Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 7 Enumerated_Domain_Value_Definition: Felsic to intermediate granitic; equivalent to Jurassic intrusions (Jurassic), equivalent to Jg Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys and bedsurf_units.doc Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 11 Enumerated_Domain_Value_Definition: Foliated; may either be syn-Jurassic deformation, or part of the pre-Mississippian amphibolite-facies metamorphic rocks Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys and bedsurf_units.doc Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 13 Enumerated_Domain_Value_Definition: Rhyolite, equivalent to lKf (Cretaceous) Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys and bedsurf_units.doc Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 14 Enumerated_Domain_Value_Definition: Hornblendite; equivalent to Jh (Jurassic) Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys and bedsurf_units.doc Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 16 Enumerated_Domain_Value_Definition: Basalt, equivalent to lTb (Tertiary) Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys and bedsurf_units.doc Attribute: Attribute_Label: EASTING Attribute_Definition: Easting Attribute_Definition_Source: UTM Zone 7, NAD 27 (see Spatial_Reference_Information) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 475893 Range_Domain_Maximum: 498930 Attribute_Units_of_Measure: meters Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy: 10 Attribute_Value_Accuracy_Explanation: Accuracy, in meters, based on Garmin 12XL (see Positional_Accuracy) Attribute: Attribute_Label: NORTHING Attribute_Definition: Northing Attribute_Definition_Source: UTM Zone 7, NAD 27 (see Spatial_Reference_Information) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7096891 Range_Domain_Maximum: 7124037 Attribute_Units_of_Measure: meters Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy: 10 Attribute_Value_Accuracy_Explanation: Accuracy, in meters, based on Garmin 12XL (see Positional_Accuracy) Detailed_Description: Entity_Type: Entity_Type_Label: eaga1faultsym.shp Entity_Type_Definition: Point attribute table of fault orientation symbols Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Entity_Attribute_Layer_Name: eaga1faultsym Attribute: Attribute_Label: SYMBOL Attribute_Definition: Symbol style coding of fault orientation Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 7 Enumerated_Domain_Value_Definition: Bearing of dip of fault Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Detailed_Description: Entity_Type: Entity_Type_Label: eaga1foldsym.shp Entity_Type_Definition: Point attribute table of fold orientation symbols Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Entity_Attribute_Layer_Name: eaga1foldsym Attribute: Attribute_Label: SYMBOL Attribute_Definition: Symbol style coding of fold orientation Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 22 Enumerated_Domain_Value_Definition: Anticline Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 23 Enumerated_Domain_Value_Definition: Syncline Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 26 Enumerated_Domain_Value_Definition: Overturned syncline Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 27 Enumerated_Domain_Value_Definition: Overturned anticline Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 39 Enumerated_Domain_Value_Definition: Arrow indicating plunging direction of fold axis Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: TYPE Attribute_Definition: general type of fold Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: anti Enumerated_Domain_Value_Definition: anticline Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: syn Enumerated_Domain_Value_Definition: syncline Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: overanti Enumerated_Domain_Value_Definition: overturned anticline Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: oversyn Enumerated_Domain_Value_Definition: overturned syncline Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Detailed_Description: Entity_Type: Entity_Type_Label: eaga1indmin.shp Entity_Type_Definition: Point attribute table of kyanite, staurolite, and tourmaline localities identified by thin section petrography Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Entity_Attribute_Layer_Name: eaga1indmin Attribute: Attribute_Label: SAMPLE_NO Attribute_Definition: Unique sample identifier Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys and others (see Source information) Attribute_Domain_Values: Unrepresentable_Domain: Generic example of unique sample identifier: (YY)YYAAA999X: (YY)YY=last two digits of year or complete 4 digit year, AAA=geologist’s initials (one to three characters), 999=unique station number, X=null or unique alpha character designating a sample was taken at the field station; some sample identifiers have “–M/DD” at the end of the identifier, which indicates the date the sample was collected Attribute: Attribute_Label: EASTING Attribute_Definition: Easting Attribute_Definition_Source: UTM Zone 7, NAD 27 (see Spatial_Reference_Information) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 475609 Range_Domain_Maximum: 498703 Attribute_Units_of_Measure: meters Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy: 10 Attribute_Value_Accuracy_Explanation: Accuracy, in meters, based on Garmin 12XL (see Positional_Accuracy) Attribute: Attribute_Label: NORTHING Attribute_Definition: Northing Attribute_Definition_Source: UTM Zone 7, NAD 27 (see Spatial_Reference_Information) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7098732 Range_Domain_Maximum: 7123509 Attribute_Units_of_Measure: meters Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy: 10 Attribute_Value_Accuracy_Explanation: Accuracy, in meters, based on Garmin 12XL (see Positional_Accuracy) Attribute: Attribute_Label: Mineral Attribute_Definition: Indicator mineral that was identified by thin section petrography Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: kyanite Enumerated_Domain_Value_Definition: kyanite Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: staurolite Enumerated_Domain_Value_Definition: staurolite Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: tourmaline Enumerated_Domain_Value_Definition: tourmaline Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: TYPE Attribute_Definition: Symbol showing location on maps PIR 2002-1a and PIR 2002-1b of indicator minerals that were identified by thin section petrography. Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys and others (see Source information) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: K Enumerated_Domain_Value_Definition: kyanite Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: S Enumerated_Domain_Value_Definition: staurolite Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: T Enumerated_Domain_Value_Definition: tourmaline Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Detailed_Description: Entity_Type: Entity_Type_Label: eaga1pingo.shp Entity_Type_Definition: Point attribute table of pingo locations Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Entity_Attribute_Layer_Name: eaga1pingo Attribute: Attribute_Label: CODE Attribute_Definition: Symbol style coding of pingo Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 52 Enumerated_Domain_Value_Definition: Pingo Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Detailed_Description: Entity_Type: Entity_Type_Label: eaga1srfcont.shp Entity_Type_Definition: Attribute table of the surficial units Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Entity_Attribute_Layer_Name: eaga1srfcont Attribute: Attribute_Label: JUSTBED Attribute_Definition: surficial map unit labels, exposed bedrock areas designated as "BX" Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Codeset_Domain: Codeset_Name: PIR2002-1_codeset.pdf Codeset_Source: Alaska Division of Geological & Geophysical Surveys Detailed_Description: Entity_Type: Entity_Type_Label: eaga1str.shp Entity_Type_Definition: Point attribute table of foliation and bedding structural information Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Entity_Attribute_Layer_Name: eaga1str Attribute: Attribute_Label: SAMPLE_NO Attribute_Definition: Unique sample identifier Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Unrepresentable_Domain: Generic example of unique sample identifier: YYYYAAA999X: YYYY=complete 4 digit year, AAA=geologist’s initials (one to three characters), 999=unique station number, X=null or unique alpha character designating a sample was taken at the field station Attribute: Attribute_Label: YEAR Attribute_Definition: Year the sample was collected Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1999 Range_Domain_Maximum: 2001 Attribute_Units_of_Measure: year Attribute: Attribute_Label: GEOINI Attribute_Definition: Initials of the geologist collecting the sample Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: DS Enumerated_Domain_Value_Definition: David Szumigala Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: JEA Enumerated_Domain_Value_Definition: Jennifer Athey Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: JG Enumerated_Domain_Value_Definition: Jesse Grady Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: KC Enumerated_Domain_Value_Definition: Karen Clautice Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: MBW Enumerated_Domain_Value_Definition: Melanie Werdon Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: RN Enumerated_Domain_Value_Definition: Rainer Newberry Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: WM Enumerated_Domain_Value_Definition: Walt Munly Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Z Enumerated_Domain_Value_Definition: David Szumigala Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: STANO Attribute_Definition: Field station identifier Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Unrepresentable_Domain: Station number unique for a geologist for one calendar year Attribute: Attribute_Label: SAMPID Attribute_Definition: Sample identifier at a field station Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Unrepresentable_Domain: Sample identifier unique for a field station number Attribute: Attribute_Label: EASTING Attribute_Definition: Easting Attribute_Definition_Source: UTM Zone 7, NAD 27 (see Spatial_Reference_Information) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 475775 Range_Domain_Maximum: 499955 Attribute_Units_of_Measure: meters Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy: 10 Attribute_Value_Accuracy_Explanation: Accuracy, in meters, based on Garmin 12XL (see Positional_Accuracy) Attribute: Attribute_Label: NORTHING Attribute_Definition: Northing Attribute_Definition_Source: UTM Zone 7, NAD 27 (see Spatial_Reference_Information) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7096872 Range_Domain_Maximum: 7124495 Attribute_Units_of_Measure: meters Attribute_Value_Accuracy_Information: Attribute_Value_Accuracy: 10 Attribute_Value_Accuracy_Explanation: Accuracy, in meters, based on Garmin 12XL (see Positional_Accuracy) Attribute: Attribute_Label: BEARING Attribute_Definition: Strike of plane, where north is 0 and degrees increase clockwise to 360, always 90 degrees counter-clockwise from dip direction Attribute_Definition_Source: UTM Zone 7, NAD 27 (see Spatial_Reference_Information) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 360 Attribute_Units_of_Measure: degrees Attribute: Attribute_Label: DIP Attribute_Definition: Degrees that a plane is inclined relative to horizonal, horizontal being 0 degrees, vertical being 90 degrees; always 90 degrees clockwise from strike Attribute_Definition_Source: UTM Zone 7, NAD 27 (see Spatial_Reference_Information) Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 90 Attribute_Units_of_Measure: degrees Attribute: Attribute_Label: TYPE Attribute_Definition: Type of structure that has the orientation data Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: fol Enumerated_Domain_Value_Definition: foliation Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: vertfol Enumerated_Domain_Value_Definition: vertical foliation Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: flatfol Enumerated_Domain_Value_Definition: horizontal foliation Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: bed Enumerated_Domain_Value_Definition: bedding Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: SYMBOL Attribute_Definition: symbol style coding of structural data Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1 Enumerated_Domain_Value_Definition: Strike and direction of dip of beds Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 9 Enumerated_Domain_Value_Definition: Strike and direction of dip of foliation Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 10 Enumerated_Domain_Value_Definition: Strike of vertical foliation Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 11 Enumerated_Domain_Value_Definition: Horizontal foliation Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Contact_Position: Natural Resource Technician Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: 907-451-5020 Contact_TDD/TTY_Telephone: None available. Contact_Facsimile_Telephone: 907-451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays Contact_Instructions: Please view our Web site (http://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible. Resource_Description: Preliminary Interpretive Report 2002-1A Distribution_Liability: The State of Alaska makes no express or implied warranties (including warranties of merchantability and fitness) with respect to the character, function, or capabilities of the electronic services or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products, any failure thereof, or otherwise, and in no event will the State of Alaska's liability to the requester or anyone else exceed the fee paid for the electronic service or product. Standard_Order_Process: Non-digital_Form: Current publication is available on paper. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard. Fees: Printed publication can be purchased for $13.00 (contact information below) plus shipping if mailed. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: PDF Format_Version_Number: 1.6 File_Decompression_Technique: No compression applied Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://dx.doi.org/10.14509/2863 Digital_Form: Digital_Transfer_Information: Format_Name: ArcGIS Shapefile Format_Version_Number: ESRI ArcGIS 9.x File_Decompression_Technique: No compression applied Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://dx.doi.org/10.14509/2863 Offline_Option: Offline_Media: CD-ROM Recording_Format: Joliet Fees: Digital files on CD-ROM are available for $10.00 (contact information below). No fees charged for downloaded files. Ordering_Instructions: Order by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). The DGGS web site (http://www.dggs.alaska.gov/) has a list of electronic data available and an order form that can be printed. Payment accepted: Cash, check, money order, VISA, or MasterCard. Turnaround: Digital downloads: less than 30 minutes for most files. Offline CD/DVD-ROMs: 1-2 weeks unless special arrangements are made and an express fee is paid. Technical_Prerequisites: Please check the MapInfo web site (http://www.mapinfo.com/) for the latest documentation on importing ESRI shape files. Metadata_Reference_Information: Metadata_Date: 20080506 Metadata_Review_Date: 20080506 Metadata_Future_Review_Date: 20090105 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical address Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: 907-451-5039 Contact_Facsimile_Telephone: 907-451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays. Contact_Instructions: Please contact us through the e-mail address above whenever possible. Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: none Metadata_Use_Constraints: If the user has modified the data in any way they are obligated to describe the types of modifications they have performed in the supporting metadata file. User specifically agrees not to imply that changes they made were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys.